I dont know about 2wd Saphs but in the escos world you might aswell not bother if you think 30K will get you a usable 650Hp Car

10K for a cheap escos

you could blow 10K on transmition that probebly wouldnt even cope under heavey abuse

5K on Brakes

5K on Turbo, inlet manifold, exhaust manifold and ECU

then the engine